Mental Number Line to 1000

Sub Trajectory: number line estimation

Uses internal images and knowledge of number relationships, including place value, to determine relative size and position.


You may see this:

Linked Image to Sign In/Sign Up page

Other Examples:

  • When asked, "Which is closer to 3500; 2000 or 7000?," the child says, "70 is double 35, but 20 is only 15 away from 35, so 20 hundreds, 2000, is closer."

Help your student become a(n) Mental Number Line to 1000

Activities ask children to use their mental representation numbers up to 1000 or more to solve problems such as in the "I'm thinking of a number" game or placing a number on an empty number line labeled only with 0 and 1000 or 10,000.

Special Thanks To

Institute of Education Sciences
The research reported here was supported by the Institute of Education Sciences, U.S. Department of Education, through grant numbers R305K050157, R305A120813, R305A110188, and R305A150243. to the University of Denver. The opinions expressed are those of the authors and do not represent views of the Institute or the U.S. Department of Education.